Question 4K Movie Showing Up With Black Bars @ Top and Bottom... why?

MarsColonist

Commendable
Jan 9, 2021
105
9
1,585
I set the image output settings on my Sony UBP-X800M2 4K movie player to put out a 4K image. My AORUS FO48U 48" 4K computer monitor is connected with a 4K certified HDMI cable to the disc player. I put a 4K Black Hawk Down movie into the device. And... I am seeing the film image on the screen, but there are black bars at the top and the bottom of the screen for some reason.

Aspect ratio of the player image is set to 16:9.

Why the black bars? Shouldn't the image fill the screen? I looked over the settings in the player and I'm not sure why.

Is it something specific to the 4K version of Black Hawk Down that it looks this way when it's running, or am I doing something wrong? Why the black bars?

Yesterday I watched a 1080p blu-ray of Stargate: Atlantis on this display, and the episode seemed to fill the screen perfectly, so I'm not sure why this would be happening.